I am getting stock barrels from a Pressure Washing company. They buy chlorine in 55 gallon drums. Talk about clean barrels, right? We plan on linking 3 barrels tipped on a diagonal for over 150 gallons of rainwater from one spot. We just installed gutters and the downspout that will be diverted. Well probably use a kit for that part. You can buy the diverting kits online/ Home Depot etc.. In fact you can buy all the connection sets, faucets etc in kits if you don't want to devise your own. Please keep us posted in your progress.
